-50.12% is the change from 836 to 417
Calculation steps:
[( 417 - 836 ) ÷ 836] x 100 = -50.12%
Formula
Percentage change = [(417 - 836) / 836] x 100
Subtract the new number by the original number
417 - 836 = -419
-419 ÷ 836 = -0.5011961722488039
-0.5011961722488039 x 100 = -50.12%