-81.47% is the change from 394 to 73
Calculation steps:
[( 73 - 394 ) ÷ 394] x 100 = -81.47%
Formula
Percentage change = [(73 - 394) / 394] x 100
Subtract the new number by the original number
73 - 394 = -321
-321 ÷ 394 = -0.8147208121827412
-0.8147208121827412 x 100 = -81.47%