-83.96% is the change from 611 to 98
Calculation steps:
[( 98 - 611 ) ÷ 611] x 100 = -83.96%
Formula
Percentage change = [(98 - 611) / 611] x 100
Subtract the new number by the original number
98 - 611 = -513
-513 ÷ 611 = -0.839607201309329
-0.839607201309329 x 100 = -83.96%