-65.63% is the change from 64 to 22
Calculation steps:
[( 22 - 64 ) ÷ 64] x 100 = -65.63%
Formula
Percentage change = [(22 - 64) / 64] x 100
Subtract the new number by the original number
22 - 64 = -42
-42 ÷ 64 = -0.65625
-0.65625 x 100 = -65.63%
Example