-59.61% is the change from 817 to 330
Calculation steps:
[( 330 - 817 ) ÷ 817] x 100 = -59.61%
Formula
Percentage change = [(330 - 817) / 817] x 100
Subtract the new number by the original number
330 - 817 = -487
-487 ÷ 817 = -0.5960832313341493
-0.5960832313341493 x 100 = -59.61%