-96.67% is the change from 811 to 27
Calculation steps:
[( 27 - 811 ) ÷ 811] x 100 = -96.67%
Formula
Percentage change = [(27 - 811) / 811] x 100
Subtract the new number by the original number
27 - 811 = -784
-784 ÷ 811 = -0.966707768187423
-0.966707768187423 x 100 = -96.67%