65.75% is the change from 254 to 421
Calculation steps:
[( 421 - 254 ) ÷ 254] x 100 = 65.75%
Formula
Percentage change = [(421 - 254) / 254] x 100
Subtract the new number by the original number
421 - 254 = 167
167 ÷ 254 = 0.65748031496063
0.65748031496063 x 100 = 65.75%