-47.67% is the change from 837 to 438
Calculation steps:
[( 438 - 837 ) ÷ 837] x 100 = -47.67%
Formula
Percentage change = [(438 - 837) / 837] x 100
Subtract the new number by the original number
438 - 837 = -399
-399 ÷ 837 = -0.4767025089605735
-0.4767025089605735 x 100 = -47.67%