-66.2% is the change from 287 to 97
Calculation steps:
[( 97 - 287 ) ÷ 287] x 100 = -66.2%
Formula
Percentage change = [(97 - 287) / 287] x 100
Subtract the new number by the original number
97 - 287 = -190
-190 ÷ 287 = -0.662020905923345
-0.662020905923345 x 100 = -66.2%