-70.86% is the change from 851 to 248
Calculation steps:
[( 248 - 851 ) ÷ 851] x 100 = -70.86%
Formula
Percentage change = [(248 - 851) / 851] x 100
Subtract the new number by the original number
248 - 851 = -603
-603 ÷ 851 = -0.7085781433607521
-0.7085781433607521 x 100 = -70.86%