-77.47% is the change from 293 to 66
Calculation steps:
[( 66 - 293 ) ÷ 293] x 100 = -77.47%
Formula
Percentage change = [(66 - 293) / 293] x 100
Subtract the new number by the original number
66 - 293 = -227
-227 ÷ 293 = -0.7747440273037542
-0.7747440273037542 x 100 = -77.47%