-51.43% is the change from 838 to 407
Calculation steps:
[( 407 - 838 ) ÷ 838] x 100 = -51.43%
Formula
Percentage change = [(407 - 838) / 838] x 100
Subtract the new number by the original number
407 - 838 = -431
-431 ÷ 838 = -0.5143198090692124
-0.5143198090692124 x 100 = -51.43%