65.35% is the change from 254 to 420
Calculation steps:
[( 420 - 254 ) ÷ 254] x 100 = 65.35%
Formula
Percentage change = [(420 - 254) / 254] x 100
Subtract the new number by the original number
420 - 254 = 166
166 ÷ 254 = 0.6535433070866141
0.6535433070866141 x 100 = 65.35%