-68.63% is the change from 204 to 64
Calculation steps:
[( 64 - 204 ) ÷ 204] x 100 = -68.63%
Formula
Percentage change = [(64 - 204) / 204] x 100
Subtract the new number by the original number
64 - 204 = -140
-140 ÷ 204 = -0.6862745098039216
-0.6862745098039216 x 100 = -68.63%