-74.11% is the change from 838 to 217
Calculation steps:
[( 217 - 838 ) ÷ 838] x 100 = -74.11%
Formula
Percentage change = [(217 - 838) / 838] x 100
Subtract the new number by the original number
217 - 838 = -621
-621 ÷ 838 = -0.7410501193317423
-0.7410501193317423 x 100 = -74.11%