64.37% is the change from 247 to 406
Calculation steps:
[( 406 - 247 ) ÷ 247] x 100 = 64.37%
Formula
Percentage change = [(406 - 247) / 247] x 100
Subtract the new number by the original number
406 - 247 = 159
159 ÷ 247 = 0.6437246963562753
0.6437246963562753 x 100 = 64.37%