-51.41% is the change from 850 to 413
Calculation steps:
[( 413 - 850 ) ÷ 850] x 100 = -51.41%
Formula
Percentage change = [(413 - 850) / 850] x 100
Subtract the new number by the original number
413 - 850 = -437
-437 ÷ 850 = -0.5141176470588236
-0.5141176470588236 x 100 = -51.41%