948.75% is the change from 80 to 839
Calculation steps:
[( 839 - 80 ) ÷ 80] x 100 = 948.75%
Formula
Percentage change = [(839 - 80) / 80] x 100
Subtract the new number by the original number
839 - 80 = 759
759 ÷ 80 = 9.4875
9.4875 x 100 = 948.75%
Example