271.68% is the change from 226 to 840
Calculation steps:
[( 840 - 226 ) ÷ 226] x 100 = 271.68%
Formula
Percentage change = [(840 - 226) / 226] x 100
Subtract the new number by the original number
840 - 226 = 614
614 ÷ 226 = 2.7168141592920354
2.7168141592920354 x 100 = 271.68%