177.05% is the change from 305 to 845
Calculation steps:
[( 845 - 305 ) ÷ 305] x 100 = 177.05%
Formula
Percentage change = [(845 - 305) / 305] x 100
Subtract the new number by the original number
845 - 305 = 540
540 ÷ 305 = 1.7704918032786885
1.7704918032786885 x 100 = 177.05%