-84.87% is the change from 919 to 139
Calculation steps:
[( 139 - 919 ) ÷ 919] x 100 = -84.87%
Formula
Percentage change = [(139 - 919) / 919] x 100
Subtract the new number by the original number
139 - 919 = -780
-780 ÷ 919 = -0.8487486398258978
-0.8487486398258978 x 100 = -84.87%