-77.87% is the change from 863 to 191
Calculation steps:
[( 191 - 863 ) ÷ 863] x 100 = -77.87%
Formula
Percentage change = [(191 - 863) / 863] x 100
Subtract the new number by the original number
191 - 863 = -672
-672 ÷ 863 = -0.7786790266512167
-0.7786790266512167 x 100 = -77.87%