-30% is the change from 140 to 98
Calculation steps:
[( 98 - 140 ) ÷ 140] x 100 = -30%
Formula
Percentage change = [(98 - 140) / 140] x 100
Subtract the new number by the original number
98 - 140 = -42
-42 ÷ 140 = -0.3
-0.3 x 100 = -30%
Example