-10.1% is the change from 297 to 267
Calculation steps:
[( 267 - 297 ) ÷ 297] x 100 = -10.1%
Formula
Percentage change = [(267 - 297) / 297] x 100
Subtract the new number by the original number
267 - 297 = -30
-30 ÷ 297 = -0.10101010101010101
-0.10101010101010101 x 100 = -10.1%