-87.8% is the change from 738 to 90
Calculation steps:
[( 90 - 738 ) ÷ 738] x 100 = -87.8%
Formula
Percentage change = [(90 - 738) / 738] x 100
Subtract the new number by the original number
90 - 738 = -648
-648 ÷ 738 = -0.8780487804878049
-0.8780487804878049 x 100 = -87.8%