-40.63% is the change from 827 to 491
Calculation steps:
[( 491 - 827 ) ÷ 827] x 100 = -40.63%
Formula
Percentage change = [(491 - 827) / 827] x 100
Subtract the new number by the original number
491 - 827 = -336
-336 ÷ 827 = -0.4062877871825877
-0.4062877871825877 x 100 = -40.63%