-37.84% is the change from 399 to 248
Calculation steps:
[( 248 - 399 ) ÷ 399] x 100 = -37.84%
Formula
Percentage change = [(248 - 399) / 399] x 100
Subtract the new number by the original number
248 - 399 = -151
-151 ÷ 399 = -0.37844611528822053
-0.37844611528822053 x 100 = -37.84%