-96.2% is the change from 552 to 21
Calculation steps:
[( 21 - 552 ) ÷ 552] x 100 = -96.2%
Formula
Percentage change = [(21 - 552) / 552] x 100
Subtract the new number by the original number
21 - 552 = -531
-531 ÷ 552 = -0.9619565217391305
-0.9619565217391305 x 100 = -96.2%