-84.31% is the change from 306 to 48
Calculation steps:
[( 48 - 306 ) ÷ 306] x 100 = -84.31%
Formula
Percentage change = [(48 - 306) / 306] x 100
Subtract the new number by the original number
48 - 306 = -258
-258 ÷ 306 = -0.8431372549019608
-0.8431372549019608 x 100 = -84.31%