-21.66% is the change from 277 to 217
Calculation steps:
[( 217 - 277 ) ÷ 277] x 100 = -21.66%
Formula
Percentage change = [(217 - 277) / 277] x 100
Subtract the new number by the original number
217 - 277 = -60
-60 ÷ 277 = -0.21660649819494585
-0.21660649819494585 x 100 = -21.66%