-91.05% is the change from 637 to 57
Calculation steps:
[( 57 - 637 ) ÷ 637] x 100 = -91.05%
Formula
Percentage change = [(57 - 637) / 637] x 100
Subtract the new number by the original number
57 - 637 = -580
-580 ÷ 637 = -0.9105180533751962
-0.9105180533751962 x 100 = -91.05%