425% is the change from 16 to 84
Calculation steps:
[( 84 - 16 ) ÷ 16] x 100 = 425%
Formula
Percentage change = [(84 - 16) / 16] x 100
Subtract the new number by the original number
84 - 16 = 68
68 ÷ 16 = 4.25
4.25 x 100 = 425%
Example