-71.08% is the change from 491 to 142
Calculation steps:
[( 142 - 491 ) ÷ 491] x 100 = -71.08%
Formula
Percentage change = [(142 - 491) / 491] x 100
Subtract the new number by the original number
142 - 491 = -349
-349 ÷ 491 = -0.7107942973523421
-0.7107942973523421 x 100 = -71.08%