-71.49% is the change from 491 to 140
Calculation steps:
[( 140 - 491 ) ÷ 491] x 100 = -71.49%
Formula
Percentage change = [(140 - 491) / 491] x 100
Subtract the new number by the original number
140 - 491 = -351
-351 ÷ 491 = -0.714867617107943
-0.714867617107943 x 100 = -71.49%