-5.64% is the change from 337 to 318
Calculation steps:
[( 318 - 337 ) ÷ 337] x 100 = -5.64%
Formula
Percentage change = [(318 - 337) / 337] x 100
Subtract the new number by the original number
318 - 337 = -19
-19 ÷ 337 = -0.05637982195845697
-0.05637982195845697 x 100 = -5.64%