-38.71% is the change from 837 to 513
Calculation steps:
[( 513 - 837 ) ÷ 837] x 100 = -38.71%
Formula
Percentage change = [(513 - 837) / 837] x 100
Subtract the new number by the original number
513 - 837 = -324
-324 ÷ 837 = -0.3870967741935484
-0.3870967741935484 x 100 = -38.71%