-94.29% is the change from 840 to 48
Calculation steps:
[( 48 - 840 ) ÷ 840] x 100 = -94.29%
Formula
Percentage change = [(48 - 840) / 840] x 100
Subtract the new number by the original number
48 - 840 = -792
-792 ÷ 840 = -0.9428571428571428
-0.9428571428571428 x 100 = -94.29%