-66.05% is the change from 975 to 331
Calculation steps:
[( 331 - 975 ) ÷ 975] x 100 = -66.05%
Formula
Percentage change = [(331 - 975) / 975] x 100
Subtract the new number by the original number
331 - 975 = -644
-644 ÷ 975 = -0.6605128205128206
-0.6605128205128206 x 100 = -66.05%