139.44% is the change from 71 to 170
Calculation steps:
[( 170 - 71 ) ÷ 71] x 100 = 139.44%
Formula
Percentage change = [(170 - 71) / 71] x 100
Subtract the new number by the original number
170 - 71 = 99
99 ÷ 71 = 1.3943661971830985
1.3943661971830985 x 100 = 139.44%