-27% is the change from 837 to 611
Calculation steps:
[( 611 - 837 ) ÷ 837] x 100 = -27%
Formula
Percentage change = [(611 - 837) / 837] x 100
Subtract the new number by the original number
611 - 837 = -226
-226 ÷ 837 = -0.27001194743130225
-0.27001194743130225 x 100 = -27%