-59.16% is the change from 666 to 272
Calculation steps:
[( 272 - 666 ) ÷ 666] x 100 = -59.16%
Formula
Percentage change = [(272 - 666) / 666] x 100
Subtract the new number by the original number
272 - 666 = -394
-394 ÷ 666 = -0.5915915915915916
-0.5915915915915916 x 100 = -59.16%