184.31% is the change from 306 to 870
Calculation steps:
[( 870 - 306 ) ÷ 306] x 100 = 184.31%
Formula
Percentage change = [(870 - 306) / 306] x 100
Subtract the new number by the original number
870 - 306 = 564
564 ÷ 306 = 1.8431372549019607
1.8431372549019607 x 100 = 184.31%