-80.63% is the change from 991 to 192
Calculation steps:
[( 192 - 991 ) ÷ 991] x 100 = -80.63%
Formula
Percentage change = [(192 - 991) / 991] x 100
Subtract the new number by the original number
192 - 991 = -799
-799 ÷ 991 = -0.8062563067608476
-0.8062563067608476 x 100 = -80.63%