-66.91% is the change from 837 to 277
Calculation steps:
[( 277 - 837 ) ÷ 837] x 100 = -66.91%
Formula
Percentage change = [(277 - 837) / 837] x 100
Subtract the new number by the original number
277 - 837 = -560
-560 ÷ 837 = -0.6690561529271206
-0.6690561529271206 x 100 = -66.91%