-74.8% is the change from 254 to 64
Calculation steps:
[( 64 - 254 ) ÷ 254] x 100 = -74.8%
Formula
Percentage change = [(64 - 254) / 254] x 100
Subtract the new number by the original number
64 - 254 = -190
-190 ÷ 254 = -0.7480314960629921
-0.7480314960629921 x 100 = -74.8%