218% is the change from 100 to 318
Calculation steps:
[( 318 - 100 ) ÷ 100] x 100 = 218%
Formula
Percentage change = [(318 - 100) / 100] x 100
Subtract the new number by the original number
318 - 100 = 218
218 ÷ 100 = 2.18
2.18 x 100 = 218%
Example