1000% is the change from 77 to 847
Calculation steps:
[( 847 - 77 ) ÷ 77] x 100 = 1000%
Formula
Percentage change = [(847 - 77) / 77] x 100
Subtract the new number by the original number
847 - 77 = 770
770 ÷ 77 = 10
10 x 100 = 1000%
Example