-60.95% is the change from 817 to 319
Calculation steps:
[( 319 - 817 ) ÷ 817] x 100 = -60.95%
Formula
Percentage change = [(319 - 817) / 817] x 100
Subtract the new number by the original number
319 - 817 = -498
-498 ÷ 817 = -0.609547123623011
-0.609547123623011 x 100 = -60.95%