-90.04% is the change from 271 to 27
Calculation steps:
[( 27 - 271 ) ÷ 271] x 100 = -90.04%
Formula
Percentage change = [(27 - 271) / 271] x 100
Subtract the new number by the original number
27 - 271 = -244
-244 ÷ 271 = -0.9003690036900369
-0.9003690036900369 x 100 = -90.04%