-36.18% is the change from 807 to 515
Calculation steps:
[( 515 - 807 ) ÷ 807] x 100 = -36.18%
Formula
Percentage change = [(515 - 807) / 807] x 100
Subtract the new number by the original number
515 - 807 = -292
-292 ÷ 807 = -0.3618339529120198
-0.3618339529120198 x 100 = -36.18%