-15.94% is the change from 320 to 269
Calculation steps:
[( 269 - 320 ) ÷ 320] x 100 = -15.94%
Formula
Percentage change = [(269 - 320) / 320] x 100
Subtract the new number by the original number
269 - 320 = -51
-51 ÷ 320 = -0.159375
-0.159375 x 100 = -15.94%