-29.7% is the change from 266 to 187
Calculation steps:
[( 187 - 266 ) ÷ 266] x 100 = -29.7%
Formula
Percentage change = [(187 - 266) / 266] x 100
Subtract the new number by the original number
187 - 266 = -79
-79 ÷ 266 = -0.29699248120300753
-0.29699248120300753 x 100 = -29.7%