988.75% is the change from 80 to 871
Calculation steps:
[( 871 - 80 ) ÷ 80] x 100 = 988.75%
Formula
Percentage change = [(871 - 80) / 80] x 100
Subtract the new number by the original number
871 - 80 = 791
791 ÷ 80 = 9.8875
9.8875 x 100 = 988.75%
Example