-9.7% is the change from 237 to 214
Calculation steps:
[( 214 - 237 ) ÷ 237] x 100 = -9.7%
Formula
Percentage change = [(214 - 237) / 237] x 100
Subtract the new number by the original number
214 - 237 = -23
-23 ÷ 237 = -0.0970464135021097
-0.0970464135021097 x 100 = -9.7%