-18.47% is the change from 991 to 808
Calculation steps:
[( 808 - 991 ) ÷ 991] x 100 = -18.47%
Formula
Percentage change = [(808 - 991) / 991] x 100
Subtract the new number by the original number
808 - 991 = -183
-183 ÷ 991 = -0.1846619576185671
-0.1846619576185671 x 100 = -18.47%