-90.05% is the change from 975 to 97
Calculation steps:
[( 97 - 975 ) ÷ 975] x 100 = -90.05%
Formula
Percentage change = [(97 - 975) / 975] x 100
Subtract the new number by the original number
97 - 975 = -878
-878 ÷ 975 = -0.9005128205128206
-0.9005128205128206 x 100 = -90.05%