-1.52% is the change from 990 to 975
Calculation steps:
[( 975 - 990 ) ÷ 990] x 100 = -1.52%
Formula
Percentage change = [(975 - 990) / 990] x 100
Subtract the new number by the original number
975 - 990 = -15
-15 ÷ 990 = -0.015151515151515152
-0.015151515151515152 x 100 = -1.52%