186.93% is the change from 306 to 878
Calculation steps:
[( 878 - 306 ) ÷ 306] x 100 = 186.93%
Formula
Percentage change = [(878 - 306) / 306] x 100
Subtract the new number by the original number
878 - 306 = 572
572 ÷ 306 = 1.869281045751634
1.869281045751634 x 100 = 186.93%