-38.64% is the change from 528 to 324
Calculation steps:
[( 324 - 528 ) ÷ 528] x 100 = -38.64%
Formula
Percentage change = [(324 - 528) / 528] x 100
Subtract the new number by the original number
324 - 528 = -204
-204 ÷ 528 = -0.38636363636363635
-0.38636363636363635 x 100 = -38.64%