-89.39% is the change from 603 to 64
Calculation steps:
[( 64 - 603 ) ÷ 603] x 100 = -89.39%
Formula
Percentage change = [(64 - 603) / 603] x 100
Subtract the new number by the original number
64 - 603 = -539
-539 ÷ 603 = -0.8938640132669984
-0.8938640132669984 x 100 = -89.39%