-15.62% is the change from 621 to 524
Calculation steps:
[( 524 - 621 ) ÷ 621] x 100 = -15.62%
Formula
Percentage change = [(524 - 621) / 621] x 100
Subtract the new number by the original number
524 - 621 = -97
-97 ÷ 621 = -0.15619967793880837
-0.15619967793880837 x 100 = -15.62%