-84.73% is the change from 910 to 139
Calculation steps:
[( 139 - 910 ) ÷ 910] x 100 = -84.73%
Formula
Percentage change = [(139 - 910) / 910] x 100
Subtract the new number by the original number
139 - 910 = -771
-771 ÷ 910 = -0.8472527472527472
-0.8472527472527472 x 100 = -84.73%