-73.56% is the change from 817 to 216
Calculation steps:
[( 216 - 817 ) ÷ 817] x 100 = -73.56%
Formula
Percentage change = [(216 - 817) / 817] x 100
Subtract the new number by the original number
216 - 817 = -601
-601 ÷ 817 = -0.7356181150550796
-0.7356181150550796 x 100 = -73.56%