-60.92% is the change from 806 to 315
Calculation steps:
[( 315 - 806 ) ÷ 806] x 100 = -60.92%
Formula
Percentage change = [(315 - 806) / 806] x 100
Subtract the new number by the original number
315 - 806 = -491
-491 ÷ 806 = -0.609181141439206
-0.609181141439206 x 100 = -60.92%