-69.65% is the change from 817 to 248
Calculation steps:
[( 248 - 817 ) ÷ 817] x 100 = -69.65%
Formula
Percentage change = [(248 - 817) / 817] x 100
Subtract the new number by the original number
248 - 817 = -569
-569 ÷ 817 = -0.6964504283965728
-0.6964504283965728 x 100 = -69.65%