-71.81% is the change from 227 to 64
Calculation steps:
[( 64 - 227 ) ÷ 227] x 100 = -71.81%
Formula
Percentage change = [(64 - 227) / 227] x 100
Subtract the new number by the original number
64 - 227 = -163
-163 ÷ 227 = -0.7180616740088106
-0.7180616740088106 x 100 = -71.81%