-40.5% is the change from 837 to 498
Calculation steps:
[( 498 - 837 ) ÷ 837] x 100 = -40.5%
Formula
Percentage change = [(498 - 837) / 837] x 100
Subtract the new number by the original number
498 - 837 = -339
-339 ÷ 837 = -0.4050179211469534
-0.4050179211469534 x 100 = -40.5%