-92.94% is the change from 991 to 70
Calculation steps:
[( 70 - 991 ) ÷ 991] x 100 = -92.94%
Formula
Percentage change = [(70 - 991) / 991] x 100
Subtract the new number by the original number
70 - 991 = -921
-921 ÷ 991 = -0.929364278506559
-0.929364278506559 x 100 = -92.94%