-65% is the change from 140 to 49
Calculation steps:
[( 49 - 140 ) ÷ 140] x 100 = -65%
Formula
Percentage change = [(49 - 140) / 140] x 100
Subtract the new number by the original number
49 - 140 = -91
-91 ÷ 140 = -0.65
-0.65 x 100 = -65%
Example