-67.3% is the change from 838 to 274
Calculation steps:
[( 274 - 838 ) ÷ 838] x 100 = -67.3%
Formula
Percentage change = [(274 - 838) / 838] x 100
Subtract the new number by the original number
274 - 838 = -564
-564 ÷ 838 = -0.6730310262529833
-0.6730310262529833 x 100 = -67.3%