2370.59% is the change from 34 to 840
Calculation steps:
[( 840 - 34 ) ÷ 34] x 100 = 2370.59%
Formula
Percentage change = [(840 - 34) / 34] x 100
Subtract the new number by the original number
840 - 34 = 806
806 ÷ 34 = 23.705882352941178
23.705882352941178 x 100 = 2370.59%