117% is the change from 100 to 217
Calculation steps:
[( 217 - 100 ) ÷ 100] x 100 = 117%
Formula
Percentage change = [(217 - 100) / 100] x 100
Subtract the new number by the original number
217 - 100 = 117
117 ÷ 100 = 1.17
1.17 x 100 = 117%
Example