249.45% is the change from 271 to 947
Calculation steps:
[( 947 - 271 ) ÷ 271] x 100 = 249.45%
Formula
Percentage change = [(947 - 271) / 271] x 100
Subtract the new number by the original number
947 - 271 = 676
676 ÷ 271 = 2.4944649446494465
2.4944649446494465 x 100 = 249.45%