-88.69% is the change from 566 to 64
Calculation steps:
[( 64 - 566 ) ÷ 566] x 100 = -88.69%
Formula
Percentage change = [(64 - 566) / 566] x 100
Subtract the new number by the original number
64 - 566 = -502
-502 ÷ 566 = -0.8869257950530035
-0.8869257950530035 x 100 = -88.69%