21.74% is the change from 253 to 308
Calculation steps:
[( 308 - 253 ) ÷ 253] x 100 = 21.74%
Formula
Percentage change = [(308 - 253) / 253] x 100
Subtract the new number by the original number
308 - 253 = 55
55 ÷ 253 = 0.21739130434782608
0.21739130434782608 x 100 = 21.74%