978.95% is the change from 76 to 820
Calculation steps:
[( 820 - 76 ) ÷ 76] x 100 = 978.95%
Formula
Percentage change = [(820 - 76) / 76] x 100
Subtract the new number by the original number
820 - 76 = 744
744 ÷ 76 = 9.789473684210526
9.789473684210526 x 100 = 978.95%