-15.98% is the change from 338 to 284
Calculation steps:
[( 284 - 338 ) ÷ 338] x 100 = -15.98%
Formula
Percentage change = [(284 - 338) / 338] x 100
Subtract the new number by the original number
284 - 338 = -54
-54 ÷ 338 = -0.15976331360946747
-0.15976331360946747 x 100 = -15.98%