-5.21% is the change from 307 to 291
Calculation steps:
[( 291 - 307 ) ÷ 307] x 100 = -5.21%
Formula
Percentage change = [(291 - 307) / 307] x 100
Subtract the new number by the original number
291 - 307 = -16
-16 ÷ 307 = -0.05211726384364821
-0.05211726384364821 x 100 = -5.21%