-66.01% is the change from 971 to 330
Calculation steps:
[( 330 - 971 ) ÷ 971] x 100 = -66.01%
Formula
Percentage change = [(330 - 971) / 971] x 100
Subtract the new number by the original number
330 - 971 = -641
-641 ÷ 971 = -0.6601441812564367
-0.6601441812564367 x 100 = -66.01%