-86.29% is the change from 197 to 27
Calculation steps:
[( 27 - 197 ) ÷ 197] x 100 = -86.29%
Formula
Percentage change = [(27 - 197) / 197] x 100
Subtract the new number by the original number
27 - 197 = -170
-170 ÷ 197 = -0.8629441624365483
-0.8629441624365483 x 100 = -86.29%