-6.88% is the change from 320 to 298
Calculation steps:
[( 298 - 320 ) ÷ 320] x 100 = -6.88%
Formula
Percentage change = [(298 - 320) / 320] x 100
Subtract the new number by the original number
298 - 320 = -22
-22 ÷ 320 = -0.06875
-0.06875 x 100 = -6.88%