-21.53% is the change from 274 to 215
Calculation steps:
[( 215 - 274 ) ÷ 274] x 100 = -21.53%
Formula
Percentage change = [(215 - 274) / 274] x 100
Subtract the new number by the original number
215 - 274 = -59
-59 ÷ 274 = -0.21532846715328466
-0.21532846715328466 x 100 = -21.53%