-79.47% is the change from 755 to 155
Calculation steps:
[( 155 - 755 ) ÷ 755] x 100 = -79.47%
Formula
Percentage change = [(155 - 755) / 755] x 100
Subtract the new number by the original number
155 - 755 = -600
-600 ÷ 755 = -0.7947019867549668
-0.7947019867549668 x 100 = -79.47%