-97.92% is the change from 337 to 7
Calculation steps:
[( 7 - 337 ) ÷ 337] x 100 = -97.92%
Formula
Percentage change = [(7 - 337) / 337] x 100
Subtract the new number by the original number
7 - 337 = -330
-330 ÷ 337 = -0.9792284866468842
-0.9792284866468842 x 100 = -97.92%