71.08% is the change from 83 to 142
Calculation steps:
[( 142 - 83 ) ÷ 83] x 100 = 71.08%
Formula
Percentage change = [(142 - 83) / 83] x 100
Subtract the new number by the original number
142 - 83 = 59
59 ÷ 83 = 0.7108433734939759
0.7108433734939759 x 100 = 71.08%