-90.2% is the change from 102 to 10
Calculation steps:
[( 10 - 102 ) ÷ 102] x 100 = -90.2%
Formula
Percentage change = [(10 - 102) / 102] x 100
Subtract the new number by the original number
10 - 102 = -92
-92 ÷ 102 = -0.9019607843137255
-0.9019607843137255 x 100 = -90.2%