115.31% is the change from 307 to 661
Calculation steps:
[( 661 - 307 ) ÷ 307] x 100 = 115.31%
Formula
Percentage change = [(661 - 307) / 307] x 100
Subtract the new number by the original number
661 - 307 = 354
354 ÷ 307 = 1.1530944625407167
1.1530944625407167 x 100 = 115.31%