-91.73% is the change from 641 to 53
Calculation steps:
[( 53 - 641 ) ÷ 641] x 100 = -91.73%
Formula
Percentage change = [(53 - 641) / 641] x 100
Subtract the new number by the original number
53 - 641 = -588
-588 ÷ 641 = -0.9173166926677067
-0.9173166926677067 x 100 = -91.73%