70.04% is the change from 247 to 420
Calculation steps:
[( 420 - 247 ) ÷ 247] x 100 = 70.04%
Formula
Percentage change = [(420 - 247) / 247] x 100
Subtract the new number by the original number
420 - 247 = 173
173 ÷ 247 = 0.7004048582995951
0.7004048582995951 x 100 = 70.04%
Example