-63.66% is the change from 831 to 302
Calculation steps:
[( 302 - 831 ) ÷ 831] x 100 = -63.66%
Formula
Percentage change = [(302 - 831) / 831] x 100
Subtract the new number by the original number
302 - 831 = -529
-529 ÷ 831 = -0.6365824308062575
-0.6365824308062575 x 100 = -63.66%