-50.18% is the change from 817 to 407
Calculation steps:
[( 407 - 817 ) ÷ 817] x 100 = -50.18%
Formula
Percentage change = [(407 - 817) / 817] x 100
Subtract the new number by the original number
407 - 817 = -410
-410 ÷ 817 = -0.5018359853121175
-0.5018359853121175 x 100 = -50.18%