-66.13% is the change from 812 to 275
Calculation steps:
[( 275 - 812 ) ÷ 812] x 100 = -66.13%
Formula
Percentage change = [(275 - 812) / 812] x 100
Subtract the new number by the original number
275 - 812 = -537
-537 ÷ 812 = -0.6613300492610837
-0.6613300492610837 x 100 = -66.13%