90.3% is the change from 134 to 255
Calculation steps:
[( 255 - 134 ) ÷ 134] x 100 = 90.3%
Formula
Percentage change = [(255 - 134) / 134] x 100
Subtract the new number by the original number
255 - 134 = 121
121 ÷ 134 = 0.9029850746268657
0.9029850746268657 x 100 = 90.3%