-52.03% is the change from 838 to 402
Calculation steps:
[( 402 - 838 ) ÷ 838] x 100 = -52.03%
Formula
Percentage change = [(402 - 838) / 838] x 100
Subtract the new number by the original number
402 - 838 = -436
-436 ÷ 838 = -0.5202863961813843
-0.5202863961813843 x 100 = -52.03%