-11.76% is the change from 102 to 90
Calculation steps:
[( 90 - 102 ) ÷ 102] x 100 = -11.76%
Formula
Percentage change = [(90 - 102) / 102] x 100
Subtract the new number by the original number
90 - 102 = -12
-12 ÷ 102 = -0.11764705882352941
-0.11764705882352941 x 100 = -11.76%