167.65% is the change from 34 to 91
Calculation steps:
[( 91 - 34 ) ÷ 34] x 100 = 167.65%
Formula
Percentage change = [(91 - 34) / 34] x 100
Subtract the new number by the original number
91 - 34 = 57
57 ÷ 34 = 1.6764705882352942
1.6764705882352942 x 100 = 167.65%