-72.77% is the change from 235 to 64
Calculation steps:
[( 64 - 235 ) ÷ 235] x 100 = -72.77%
Formula
Percentage change = [(64 - 235) / 235] x 100
Subtract the new number by the original number
64 - 235 = -171
-171 ÷ 235 = -0.7276595744680852
-0.7276595744680852 x 100 = -72.77%