261.11% is the change from 18 to 65
Calculation steps:
[( 65 - 18 ) ÷ 18] x 100 = 261.11%
Formula
Percentage change = [(65 - 18) / 18] x 100
Subtract the new number by the original number
65 - 18 = 47
47 ÷ 18 = 2.611111111111111
2.611111111111111 x 100 = 261.11%