-90.67% is the change from 611 to 57
Calculation steps:
[( 57 - 611 ) ÷ 611] x 100 = -90.67%
Formula
Percentage change = [(57 - 611) / 611] x 100
Subtract the new number by the original number
57 - 611 = -554
-554 ÷ 611 = -0.9067103109656302
-0.9067103109656302 x 100 = -90.67%