840% is the change from 10 to 94
Calculation steps:
[( 94 - 10 ) ÷ 10] x 100 = 840%
Formula
Percentage change = [(94 - 10) / 10] x 100
Subtract the new number by the original number
94 - 10 = 84
84 ÷ 10 = 8.4
8.4 x 100 = 840%
Example