308.37% is the change from 215 to 878
Calculation steps:
[( 878 - 215 ) ÷ 215] x 100 = 308.37%
Formula
Percentage change = [(878 - 215) / 215] x 100
Subtract the new number by the original number
878 - 215 = 663
663 ÷ 215 = 3.083720930232558
3.083720930232558 x 100 = 308.37%