-37.31% is the change from 528 to 331
Calculation steps:
[( 331 - 528 ) ÷ 528] x 100 = -37.31%
Formula
Percentage change = [(331 - 528) / 528] x 100
Subtract the new number by the original number
331 - 528 = -197
-197 ÷ 528 = -0.3731060606060606
-0.3731060606060606 x 100 = -37.31%