-20% is the change from 535 to 428
Calculation steps:
[( 428 - 535 ) ÷ 535] x 100 = -20%
Formula
Percentage change = [(428 - 535) / 535] x 100
Subtract the new number by the original number
428 - 535 = -107
-107 ÷ 535 = -0.2
-0.2 x 100 = -20%
Example