-66.34% is the change from 817 to 275
Calculation steps:
[( 275 - 817 ) ÷ 817] x 100 = -66.34%
Formula
Percentage change = [(275 - 817) / 817] x 100
Subtract the new number by the original number
275 - 817 = -542
-542 ÷ 817 = -0.6634026927784578
-0.6634026927784578 x 100 = -66.34%