-71.4% is the change from 486 to 139
Calculation steps:
[( 139 - 486 ) ÷ 486] x 100 = -71.4%
Formula
Percentage change = [(139 - 486) / 486] x 100
Subtract the new number by the original number
139 - 486 = -347
-347 ÷ 486 = -0.7139917695473251
-0.7139917695473251 x 100 = -71.4%