-27.06% is the change from 839 to 612
Calculation steps:
[( 612 - 839 ) ÷ 839] x 100 = -27.06%
Formula
Percentage change = [(612 - 839) / 839] x 100
Subtract the new number by the original number
612 - 839 = -227
-227 ÷ 839 = -0.27056019070321813
-0.27056019070321813 x 100 = -27.06%