-95.83% is the change from 647 to 27
Calculation steps:
[( 27 - 647 ) ÷ 647] x 100 = -95.83%
Formula
Percentage change = [(27 - 647) / 647] x 100
Subtract the new number by the original number
27 - 647 = -620
-620 ÷ 647 = -0.9582689335394127
-0.9582689335394127 x 100 = -95.83%