It's a letter P with a small section of the straight line in the upper left missing. The stylized P is on a modified rectangle that is drawn to look like a sheet of paper with the upper right corner creased and folded forward onto itself. The P is centered from left to right, and closer to the bottom of the page than the top.
This PowerPoint icon is a responsive icon. This means that it's optimized for four resolutions, from tiny 16x16 until highly detailed 80x80. The style comes from the latest Microsoft Office
, which makes it perfect for any Windows applications, in particular, those with ribbon toolbar control. Unlike other icon packs that have merely hundreds of icons, this monster icon pack contains 16,000 icons, all in the same style and quality.