-35.95% is the change from 815 to 522
Calculation steps:
[( 522 - 815 ) ÷ 815] x 100 = -35.95%
Formula
Percentage change = [(522 - 815) / 815] x 100
Subtract the new number by the original number
522 - 815 = -293
-293 ÷ 815 = -0.3595092024539877
-0.3595092024539877 x 100 = -35.95%