-54.29% is the change from 140 to 64
Calculation steps:
[( 64 - 140 ) ÷ 140] x 100 = -54.29%
Formula
Percentage change = [(64 - 140) / 140] x 100
Subtract the new number by the original number
64 - 140 = -76
-76 ÷ 140 = -0.5428571428571428
-0.5428571428571428 x 100 = -54.29%