-60.94% is the change from 64 to 25
Calculation steps:
[( 25 - 64 ) ÷ 64] x 100 = -60.94%
Formula
Percentage change = [(25 - 64) / 64] x 100
Subtract the new number by the original number
25 - 64 = -39
-39 ÷ 64 = -0.609375
-0.609375 x 100 = -60.94%
Example