71.43% is the change from 140 to 240
Calculation steps:
[( 240 - 140 ) ÷ 140] x 100 = 71.43%
Formula
Percentage change = [(240 - 140) / 140] x 100
Subtract the new number by the original number
240 - 140 = 100
100 ÷ 140 = 0.7142857142857143
0.7142857142857143 x 100 = 71.43%