-51.37% is the change from 802 to 390
Calculation steps:
[( 390 - 802 ) ÷ 802] x 100 = -51.37%
Formula
Percentage change = [(390 - 802) / 802] x 100
Subtract the new number by the original number
390 - 802 = -412
-412 ÷ 802 = -0.513715710723192
-0.513715710723192 x 100 = -51.37%