180.07% is the change from 306 to 857
Calculation steps:
[( 857 - 306 ) ÷ 306] x 100 = 180.07%
Formula
Percentage change = [(857 - 306) / 306] x 100
Subtract the new number by the original number
857 - 306 = 551
551 ÷ 306 = 1.8006535947712419
1.8006535947712419 x 100 = 180.07%