-79.97% is the change from 774 to 155
Calculation steps:
[( 155 - 774 ) ÷ 774] x 100 = -79.97%
Formula
Percentage change = [(155 - 774) / 774] x 100
Subtract the new number by the original number
155 - 774 = -619
-619 ÷ 774 = -0.7997416020671835
-0.7997416020671835 x 100 = -79.97%