-83.13% is the change from 919 to 155
Calculation steps:
[( 155 - 919 ) ÷ 919] x 100 = -83.13%
Formula
Percentage change = [(155 - 919) / 919] x 100
Subtract the new number by the original number
155 - 919 = -764
-764 ÷ 919 = -0.8313384113166485
-0.8313384113166485 x 100 = -83.13%