-84.38% is the change from 992 to 155
Calculation steps:
[( 155 - 992 ) ÷ 992] x 100 = -84.38%
Formula
Percentage change = [(155 - 992) / 992] x 100
Subtract the new number by the original number
155 - 992 = -837
-837 ÷ 992 = -0.84375
-0.84375 x 100 = -84.38%