81.34% is the change from 134 to 243
Calculation steps:
[( 243 - 134 ) ÷ 134] x 100 = 81.34%
Formula
Percentage change = [(243 - 134) / 134] x 100
Subtract the new number by the original number
243 - 134 = 109
109 ÷ 134 = 0.8134328358208955
0.8134328358208955 x 100 = 81.34%