1971.43% is the change from 7 to 145
Calculation steps:
[( 145 - 7 ) ÷ 7] x 100 = 1971.43%
Formula
Percentage change = [(145 - 7) / 7] x 100
Subtract the new number by the original number
145 - 7 = 138
138 ÷ 7 = 19.714285714285715
19.714285714285715 x 100 = 1971.43%