-91.48% is the change from 669 to 57
Calculation steps:
[( 57 - 669 ) ÷ 669] x 100 = -91.48%
Formula
Percentage change = [(57 - 669) / 669] x 100
Subtract the new number by the original number
57 - 669 = -612
-612 ÷ 669 = -0.9147982062780269
-0.9147982062780269 x 100 = -91.48%