-61% is the change from 818 to 319
Calculation steps:
[( 319 - 818 ) ÷ 818] x 100 = -61%
Formula
Percentage change = [(319 - 818) / 818] x 100
Subtract the new number by the original number
319 - 818 = -499
-499 ÷ 818 = -0.6100244498777506
-0.6100244498777506 x 100 = -61%