-96.78% is the change from 653 to 21
Calculation steps:
[( 21 - 653 ) ÷ 653] x 100 = -96.78%
Formula
Percentage change = [(21 - 653) / 653] x 100
Subtract the new number by the original number
21 - 653 = -632
-632 ÷ 653 = -0.9678407350689127
-0.9678407350689127 x 100 = -96.78%