-69.42% is the change from 811 to 248
Calculation steps:
[( 248 - 811 ) ÷ 811] x 100 = -69.42%
Formula
Percentage change = [(248 - 811) / 811] x 100
Subtract the new number by the original number
248 - 811 = -563
-563 ÷ 811 = -0.6942046855733662
-0.6942046855733662 x 100 = -69.42%