-66.75% is the change from 824 to 274
Calculation steps:
[( 274 - 824 ) ÷ 824] x 100 = -66.75%
Formula
Percentage change = [(274 - 824) / 824] x 100
Subtract the new number by the original number
274 - 824 = -550
-550 ÷ 824 = -0.6674757281553398
-0.6674757281553398 x 100 = -66.75%