361.11% is the change from 18 to 83
Calculation steps:
[( 83 - 18 ) ÷ 18] x 100 = 361.11%
Formula
Percentage change = [(83 - 18) / 18] x 100
Subtract the new number by the original number
83 - 18 = 65
65 ÷ 18 = 3.611111111111111
3.611111111111111 x 100 = 361.11%