91.57% is the change from 166 to 318
Calculation steps:
[( 318 - 166 ) ÷ 166] x 100 = 91.57%
Formula
Percentage change = [(318 - 166) / 166] x 100
Subtract the new number by the original number
318 - 166 = 152
152 ÷ 166 = 0.9156626506024096
0.9156626506024096 x 100 = 91.57%