-62.72% is the change from 837 to 312
Calculation steps:
[( 312 - 837 ) ÷ 837] x 100 = -62.72%
Formula
Percentage change = [(312 - 837) / 837] x 100
Subtract the new number by the original number
312 - 837 = -525
-525 ÷ 837 = -0.6272401433691757
-0.6272401433691757 x 100 = -62.72%