-18.87% is the change from 848 to 688
Calculation steps:
[( 688 - 848 ) ÷ 848] x 100 = -18.87%
Formula
Percentage change = [(688 - 848) / 848] x 100
Subtract the new number by the original number
688 - 848 = -160
-160 ÷ 848 = -0.18867924528301888
-0.18867924528301888 x 100 = -18.87%