343.75% is the change from 16 to 71
Calculation steps:
[( 71 - 16 ) ÷ 16] x 100 = 343.75%
Formula
Percentage change = [(71 - 16) / 16] x 100
Subtract the new number by the original number
71 - 16 = 55
55 ÷ 16 = 3.4375
3.4375 x 100 = 343.75%
Example