-91.11% is the change from 641 to 57
Calculation steps:
[( 57 - 641 ) ÷ 641] x 100 = -91.11%
Formula
Percentage change = [(57 - 641) / 641] x 100
Subtract the new number by the original number
57 - 641 = -584
-584 ÷ 641 = -0.9110764430577223
-0.9110764430577223 x 100 = -91.11%