-83.89% is the change from 838 to 135
Calculation steps:
[( 135 - 838 ) ÷ 838] x 100 = -83.89%
Formula
Percentage change = [(135 - 838) / 838] x 100
Subtract the new number by the original number
135 - 838 = -703
-703 ÷ 838 = -0.8389021479713604
-0.8389021479713604 x 100 = -83.89%