-72.51% is the change from 491 to 135
Calculation steps:
[( 135 - 491 ) ÷ 491] x 100 = -72.51%
Formula
Percentage change = [(135 - 491) / 491] x 100
Subtract the new number by the original number
135 - 491 = -356
-356 ÷ 491 = -0.725050916496945
-0.725050916496945 x 100 = -72.51%