-47.49% is the change from 836 to 439
Calculation steps:
[( 439 - 836 ) ÷ 836] x 100 = -47.49%
Formula
Percentage change = [(439 - 836) / 836] x 100
Subtract the new number by the original number
439 - 836 = -397
-397 ÷ 836 = -0.4748803827751196
-0.4748803827751196 x 100 = -47.49%