-51.44% is the change from 836 to 406
Calculation steps:
[( 406 - 836 ) ÷ 836] x 100 = -51.44%
Formula
Percentage change = [(406 - 836) / 836] x 100
Subtract the new number by the original number
406 - 836 = -430
-430 ÷ 836 = -0.5143540669856459
-0.5143540669856459 x 100 = -51.44%