-21.02% is the change from 528 to 417
Calculation steps:
[( 417 - 528 ) ÷ 528] x 100 = -21.02%
Formula
Percentage change = [(417 - 528) / 528] x 100
Subtract the new number by the original number
417 - 528 = -111
-111 ÷ 528 = -0.21022727272727273
-0.21022727272727273 x 100 = -21.02%