-96.82% is the change from 628 to 20
Calculation steps:
[( 20 - 628 ) ÷ 628] x 100 = -96.82%
Formula
Percentage change = [(20 - 628) / 628] x 100
Subtract the new number by the original number
20 - 628 = -608
-608 ÷ 628 = -0.9681528662420382
-0.9681528662420382 x 100 = -96.82%