184.14% is the change from 309 to 878
Calculation steps:
[( 878 - 309 ) ÷ 309] x 100 = 184.14%
Formula
Percentage change = [(878 - 309) / 309] x 100
Subtract the new number by the original number
878 - 309 = 569
569 ÷ 309 = 1.8414239482200647
1.8414239482200647 x 100 = 184.14%