-67.74% is the change from 837 to 270
Calculation steps:
[( 270 - 837 ) ÷ 837] x 100 = -67.74%
Formula
Percentage change = [(270 - 837) / 837] x 100
Subtract the new number by the original number
270 - 837 = -567
-567 ÷ 837 = -0.6774193548387096
-0.6774193548387096 x 100 = -67.74%