81.48% is the change from 189 to 343
Calculation steps:
[( 343 - 189 ) ÷ 189] x 100 = 81.48%
Formula
Percentage change = [(343 - 189) / 189] x 100
Subtract the new number by the original number
343 - 189 = 154
154 ÷ 189 = 0.8148148148148148
0.8148148148148148 x 100 = 81.48%