66.54% is the change from 254 to 423
Calculation steps:
[( 423 - 254 ) ÷ 254] x 100 = 66.54%
Formula
Percentage change = [(423 - 254) / 254] x 100
Subtract the new number by the original number
423 - 254 = 169
169 ÷ 254 = 0.6653543307086615
0.6653543307086615 x 100 = 66.54%