271.37% is the change from 255 to 947
Calculation steps:
[( 947 - 255 ) ÷ 255] x 100 = 271.37%
Formula
Percentage change = [(947 - 255) / 255] x 100
Subtract the new number by the original number
947 - 255 = 692
692 ÷ 255 = 2.7137254901960786
2.7137254901960786 x 100 = 271.37%