91.3% is the change from 161 to 308
Calculation steps:
[( 308 - 161 ) ÷ 161] x 100 = 91.3%
Formula
Percentage change = [(308 - 161) / 161] x 100
Subtract the new number by the original number
308 - 161 = 147
147 ÷ 161 = 0.9130434782608695
0.9130434782608695 x 100 = 91.3%