-67.73% is the change from 815 to 263
Calculation steps:
[( 263 - 815 ) ÷ 815] x 100 = -67.73%
Formula
Percentage change = [(263 - 815) / 815] x 100
Subtract the new number by the original number
263 - 815 = -552
-552 ÷ 815 = -0.6773006134969325
-0.6773006134969325 x 100 = -67.73%