-64.5% is the change from 817 to 290
Calculation steps:
[( 290 - 817 ) ÷ 817] x 100 = -64.5%
Formula
Percentage change = [(290 - 817) / 817] x 100
Subtract the new number by the original number
290 - 817 = -527
-527 ÷ 817 = -0.6450428396572827
-0.6450428396572827 x 100 = -64.5%