-18.75% is the change from 528 to 429
Calculation steps:
[( 429 - 528 ) ÷ 528] x 100 = -18.75%
Formula
Percentage change = [(429 - 528) / 528] x 100
Subtract the new number by the original number
429 - 528 = -99
-99 ÷ 528 = -0.1875
-0.1875 x 100 = -18.75%