24.7% is the change from 247 to 308
Calculation steps:
[( 308 - 247 ) ÷ 247] x 100 = 24.7%
Formula
Percentage change = [(308 - 247) / 247] x 100
Subtract the new number by the original number
308 - 247 = 61
61 ÷ 247 = 0.24696356275303644
0.24696356275303644 x 100 = 24.7%