-96.95% is the change from 655 to 20
Calculation steps:
[( 20 - 655 ) ÷ 655] x 100 = -96.95%
Formula
Percentage change = [(20 - 655) / 655] x 100
Subtract the new number by the original number
20 - 655 = -635
-635 ÷ 655 = -0.9694656488549618
-0.9694656488549618 x 100 = -96.95%