-87.91% is the change from 397 to 48
Calculation steps:
[( 48 - 397 ) ÷ 397] x 100 = -87.91%
Formula
Percentage change = [(48 - 397) / 397] x 100
Subtract the new number by the original number
48 - 397 = -349
-349 ÷ 397 = -0.8790931989924433
-0.8790931989924433 x 100 = -87.91%