207% is the change from 100 to 307
Calculation steps:
[( 307 - 100 ) ÷ 100] x 100 = 207%
Formula
Percentage change = [(307 - 100) / 100] x 100
Subtract the new number by the original number
307 - 100 = 207
207 ÷ 100 = 2.07
2.07 x 100 = 207%
Example