-26.13% is the change from 815 to 602
Calculation steps:
[( 602 - 815 ) ÷ 815] x 100 = -26.13%
Formula
Percentage change = [(602 - 815) / 815] x 100
Subtract the new number by the original number
602 - 815 = -213
-213 ÷ 815 = -0.26134969325153373
-0.26134969325153373 x 100 = -26.13%