-82.89% is the change from 836 to 143
Calculation steps:
[( 143 - 836 ) ÷ 836] x 100 = -82.89%
Formula
Percentage change = [(143 - 836) / 836] x 100
Subtract the new number by the original number
143 - 836 = -693
-693 ÷ 836 = -0.8289473684210527
-0.8289473684210527 x 100 = -82.89%