-51.11% is the change from 992 to 485
Calculation steps:
[( 485 - 992 ) ÷ 992] x 100 = -51.11%
Formula
Percentage change = [(485 - 992) / 992] x 100
Subtract the new number by the original number
485 - 992 = -507
-507 ÷ 992 = -0.5110887096774194
-0.5110887096774194 x 100 = -51.11%