-6.53% is the change from 337 to 315
Calculation steps:
[( 315 - 337 ) ÷ 337] x 100 = -6.53%
Formula
Percentage change = [(315 - 337) / 337] x 100
Subtract the new number by the original number
315 - 337 = -22
-22 ÷ 337 = -0.06528189910979229
-0.06528189910979229 x 100 = -6.53%