-35.06% is the change from 813 to 528
Calculation steps:
[( 528 - 813 ) ÷ 813] x 100 = -35.06%
Formula
Percentage change = [(528 - 813) / 813] x 100
Subtract the new number by the original number
528 - 813 = -285
-285 ÷ 813 = -0.3505535055350554
-0.3505535055350554 x 100 = -35.06%