-73.74% is the change from 815 to 214
Calculation steps:
[( 214 - 815 ) ÷ 815] x 100 = -73.74%
Formula
Percentage change = [(214 - 815) / 815] x 100
Subtract the new number by the original number
214 - 815 = -601
-601 ÷ 815 = -0.7374233128834355
-0.7374233128834355 x 100 = -73.74%