-82.7% is the change from 838 to 145
Calculation steps:
[( 145 - 838 ) ÷ 838] x 100 = -82.7%
Formula
Percentage change = [(145 - 838) / 838] x 100
Subtract the new number by the original number
145 - 838 = -693
-693 ÷ 838 = -0.8269689737470167
-0.8269689737470167 x 100 = -82.7%