-89.85% is the change from 266 to 27
Calculation steps:
[( 27 - 266 ) ÷ 266] x 100 = -89.85%
Formula
Percentage change = [(27 - 266) / 266] x 100
Subtract the new number by the original number
27 - 266 = -239
-239 ÷ 266 = -0.8984962406015038
-0.8984962406015038 x 100 = -89.85%