-30.9% is the change from 851 to 588
Calculation steps:
[( 588 - 851 ) ÷ 851] x 100 = -30.9%
Formula
Percentage change = [(588 - 851) / 851] x 100
Subtract the new number by the original number
588 - 851 = -263
-263 ÷ 851 = -0.309048178613396
-0.309048178613396 x 100 = -30.9%