-89.1% is the change from 587 to 64
Calculation steps:
[( 64 - 587 ) ÷ 587] x 100 = -89.1%
Formula
Percentage change = [(64 - 587) / 587] x 100
Subtract the new number by the original number
64 - 587 = -523
-523 ÷ 587 = -0.8909710391822828
-0.8909710391822828 x 100 = -89.1%