179.15% is the change from 307 to 857
Calculation steps:
[( 857 - 307 ) ÷ 307] x 100 = 179.15%
Formula
Percentage change = [(857 - 307) / 307] x 100
Subtract the new number by the original number
857 - 307 = 550
550 ÷ 307 = 1.791530944625407
1.791530944625407 x 100 = 179.15%