-73.8% is the change from 813 to 213
Calculation steps:
[( 213 - 813 ) ÷ 813] x 100 = -73.8%
Formula
Percentage change = [(213 - 813) / 813] x 100
Subtract the new number by the original number
213 - 813 = -600
-600 ÷ 813 = -0.7380073800738007
-0.7380073800738007 x 100 = -73.8%