-18.37% is the change from 528 to 431
Calculation steps:
[( 431 - 528 ) ÷ 528] x 100 = -18.37%
Formula
Percentage change = [(431 - 528) / 528] x 100
Subtract the new number by the original number
431 - 528 = -97
-97 ÷ 528 = -0.18371212121212122
-0.18371212121212122 x 100 = -18.37%