526.87% is the change from 134 to 840
Calculation steps:
[( 840 - 134 ) ÷ 134] x 100 = 526.87%
Formula
Percentage change = [(840 - 134) / 134] x 100
Subtract the new number by the original number
840 - 134 = 706
706 ÷ 134 = 5.268656716417911
5.268656716417911 x 100 = 526.87%