-70.26% is the change from 491 to 146
Calculation steps:
[( 146 - 491 ) ÷ 491] x 100 = -70.26%
Formula
Percentage change = [(146 - 491) / 491] x 100
Subtract the new number by the original number
146 - 491 = -345
-345 ÷ 491 = -0.7026476578411406
-0.7026476578411406 x 100 = -70.26%