97.57% is the change from 247 to 488
Calculation steps:
[( 488 - 247 ) ÷ 247] x 100 = 97.57%
Formula
Percentage change = [(488 - 247) / 247] x 100
Subtract the new number by the original number
488 - 247 = 241
241 ÷ 247 = 0.9757085020242915
0.9757085020242915 x 100 = 97.57%